[Samba] Setup of a new PDC with Samba 3.2.0 - Samba

This is a discussion on [Samba] Setup of a new PDC with Samba 3.2.0 - Samba ; Hello,
I setting up a new PDC for a new domain using samba 3.2.0
I use LDAP as passwd/idmap backend.
I started from scratch just creating the OU for the
users/groups/machines/idmaps in the ldap directory, + a user used to ...

[Samba] Setup of a new PDC with Samba 3.2.0

I setting up a new PDC for a new domain using samba 3.2.0
I use LDAP as passwd/idmap backend.

I started from scratch just creating the OU for the
users/groups/machines/idmaps in the ldap directory, + a user used to bind
to ldap.

So from there I started winbind and ran net sam provision, which worked
great.
Now I plan this domain will have a one way trust with one other domain,
and as I start playing with wbinfo to verify the local/builtin groups
appear, I found that wbinfo -t fails to check secret with :
myserver:/usr/local/samba/bin# wbinfo -t
checking the trust secret via RPC calls failed
error code was NT_STATUS_CANT_ACCESS_DOMAIN_INFO (0xc00000da)
Could not check secret

So, I'm wondering, do I need to create some kind of machine trust account
for the PDC itself, or this reply from wbinfo -t is expected ?